Transaction Details

Footnotes

Represents the vesting of tranches of performance-based restricted stock units ("RSUs") granted in 2020, 2021 and 2022 under the W. R. Berkley Corporation 2018 Stock Incentive Plan for the three-year performance period ending June 30, 2025 (consisting of 43,765 shares; 38,840 shares; and 29,264 shares, respectively). | Represents payment of tax liability by withholding securities incident to the vesting of RSUs. | Includes 3,181,240 shares of common stock underlying RSUs, all of which have vested (the receipt of which has been deferred) and does not include unvested shares of common stock underlying performance-based RSUs. | Mr. William R. Berkley and the reporting person are the majority beneficial owners of the limited liability company which is included on Mr. William R. Berkley's Form 4 dated August 19, 2025.